DEVICE FOR REAL-TIME MONITORING OF DYNAMIC PROPAGATION OF WORMHOLES DURING CARBONATE ROCK ACIDIFICATION, AND OPERATION METHOD THEREFOR

WIPO Patent Application WO/2020/252801

A1

Disclosed is a device for real-time monitoring of dynamic propagation of wormholes during carbonate rock acidification, comprising an acid liquid injection system, an acid-rock reaction system, a nuclear magnetic resonance testing system, an acid liquid recovery and treatment system, and a data acquisition and experiment control system. The acid-rock reaction system is used to simulate formation temperature and pressure, the nuclear magnetic resonance testing system is used for imaging core pores; and the acid liquid recovery and treatment system is used to recover the acid liquid and treat waste gases. Using the device to perform real-time monitoring of dynamic propagation of wormholes during carbonate rock acidification, can achieve a static imaging accuracy of 0.1-100 μm and a shortest dynamic imaging time of 13 s. The device can also meet the requirements of precise description of pores before acidification and fast imaging of wormholes during acidification, and addresses the problems of rapid change in pores and difficulty in imaging during a reactive fluid displacement experiment.

QI NING (CN)
CHEN GUOBIN (CN)
LI ZHENLIANG (CN)
REN XINGHUA (CN)

PCT/CN2019/092518

December 24, 2020

June 24, 2019

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UNIV CHINA PETROLEUM EAST CHINA (CN)

E21B49/00

WO2003102362A1

2003-12-11

CN106198928A	2016-12-07
CN106121603A	2016-11-16
CN104314538A	2015-01-28
CN108226192A	2018-06-29

QINGDAO SHENDA INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)

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